NZ,
I am planning on a very close resemblance to the original 'VP' Challenger. I am a huge fan of the movie, since seeing it first in 1974 and have wanted that car ever since. My approach is as follows. Deviations from the 'VP' car noted:
True and correct Alpine White Finish with twin body-color outside mirrors (deviation)
No Hood Blackout, No Grille Blackout, No Taillamp Panel Blackout (unsure)
R/T Hood and full R/T Emblem Package (Faithful)
15 X 7" Rallyes up front with 15 X 8's in back (Deviation)
Black Interior (Faithful)
9.50:1 440, 915 heads, custom designed/ground .500"/.500" - 226°/232° @ .050" - 111.5° LSA Hydraulic Camshaft
Roller Rockers and shafts (Deviation)
Dual Plane Intake with Holley 650 vacuum secondary (Deviation)
Hood Scoops opened, Six Pack Air Cleaner adapted for use with single 4V (Deviation)
Mallory Dual Point curved for 20° BTDC initial and 36° total by 3000 rpm (engine from a 1988 recipe Obvious Deviation)
Headers, 2.50" exhaust with correct R/T Tips (Deviation)
A-833 Four Speed, Pistol Grip Shifter (Faithful)
8-3/4" differential, 3.23:1 Sure Grip, Lincoln Mark VII Rear Disc Conversion (Deviation)
1.00 Torsion Bars up front with Gusseted Lower Control Arms (Deviation)
1-1/8" front sway bar and stock Disc Brakes (Stock and therefore Faithful)
1.00" rear sway bar (Deviation T/A only)
From an appearance standpoint, the car should be a very faithful reproduction of the 'VP' Challenger. Most of the changes I propose are simply to enhance the driveability of the car and improve handling. Hopefully, I can get it close to the kind of handling/braking I currently enjoy with my 1975 Firebird Formula.
Sound sensible to you NZ?
.....Robert